Sectional wheel-rim.



c. s. JOHNSTON.

' SECTIONAL WHEEL RIM.

APPLICATION FILED MAY 24. IBM.

- 1,274,274, 1 mm July 30,191&

III/II, I I

CLARENCE 8.11 OHNS'I'ON 0F GLEN DIVE, MONTANA BEO'IIONAL WHEEL-am.-

Specification of Letters fatent.

Patented'July so; 1918.

Application and May 24, 1917. Serial No. 170,747.

2'0 at; whom it may concern:

Be it known that I, Cmnnnca S. JOHN- STON, a citizen of the United States, residing at Glendive, in the county of Dawson and State of Montana, have invented a new and useful Sectional VVheel-Rim, of which the following is a specification.

It is the object of this invention to provide novel means for producing circumferential movement of a demountable rim with respect to a felly, to the end that mutually inclined parts on the rim and on the felly may coact.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

-With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of What is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 shows in side elevation, a portion of a wheel whereunto the device forming the subject matter of this application has been applied;

Fig. 2 is a plan view showing the inner face of the folly, parts being broken away;

Fig. 3. is a cross section on the line 33 of Fig. 1;

Fig. 4 is a cross section on the line 4-4v of Fig. 1;

Fig. 5 is a fragmental longitudinal section taken through the folly band and the demountable rim and showing the mutually inclined, wedge-shaped elements of these P Fig. 6 is across section taken approximately on the line 6-6 of Fig. 5.

The letter B denotes a wheel body comrising a felly 1 circumscribed by a felly Band 2. The folly band 2 is supplied with longitudinally extended Wedges 3 located between ribs 4 on thefelly band. The felly band 2 is supplied with a side flange 5. The numeral 6 denotes a demountable rim carrying a tire 7. The demountable rim 6 has wedges 30 enacting with the wedges 3 of the folly band 2 when the dcinonntable rim is moved circumferentially with respect to the folly band. In practical operation. the demountable rim 6 is slid transverse of the felly band :2 until the dcmounta la the abuts against the side flange 5. Then, ifthe demountable rim is moved eircumferentially with respect to the folly band 2, the wed es 30 coact with the wedges 3, between the ribs 4, in a manner common in devices ofthis kind and well understood in the art.

A means is provided whereby the demountable run 6 may be moved circumferentially of the felly band 2, and this means will now be described. A rack bar 8 is secured as shown at 9 to the demountable rim 6 and extends longitudinally thereof. Extended longitudinally of the folly 1- at one side thereof is a plate 10 having teeth 11 adapted to coact in a manner to be'described hereinafter, with the teeth of the rack bar 8 on the demountablc rim 6. In one end, the plate 0 18 provided with a slot 12 through which passes a securing device 14 entering the which overlaps the outer face of the plate 10 beyond the slot 12. The construction is such that the plate 10 is mounted on the folly 1 for movement circuinferentially of the felly, plane parallel to the median plane of the wheel, or radially of the wheel.

Disposed transversely on the folly 1 and journaled for rotation therein is a shaft 16 having a squared end 17 to which is secured an eccentric 18 journaled for rotation in an opening 19 in the plate 10. The eccentric 18 may have a flan e 20 overlapping the outer face of the pli te 10. In the inner side of the eccentric 18. openings 21 are formed, the same being disposed in the are of a circle. Extended along the inner side of the plate 10 is a sprin strip 22, one end of which is secured as s own at 23 to the plate 10. The folly 1 is supplied with arecess 24 adapted to receivethe spring 22 when the same is moved transversely, by a mechanism to be described hereinafter. The free end of the spring 22 is provided with an outwardly extended projection 25 adapted to be received in the openings 21 of the eccentric 18. Pivoted at 26 to the plate 10 and located on the inner side thereof is an angular lever 27 includin a reduced end 28 received between the spring 22 and the inner face of the eccentric 18. The lever 27 is provided with a beveled surface 29 disposed inwardly oi the end 28. v

In practical operation, when it is desired and for pivotal movement in a felly. 1, the securing device having a head 15 plate 10 'being intercngaged with the teeth of the rack bar' 8. Subsequently, and when the rotation of the shaft 16 is continued, a

longitudinal movement is imparted to the plate 10, the slot 12 in the end of the plate permitting a sliding movement of the plate with respect to the securing device 14. \Vhcn the plate is moved longitudinally, after the teeth llhave been engaged with the rack bar 8, the demoimtable rim 6 will be moved circumfercntially of the folly band 2, for the purpose hercinbeforc set forth. During the operation above described, the lever 27.is swung over in the direction ofthc arrow A in Fig. 1, the beveled surface 29 of the lever entering between the spring 22 and the eccentric 18, and retracting the projection 25 on the spring out of folding relation with respect to the opening 21, to the end that the eccentric 18 may be rotated as Moresaid. After the rim 6 has been moved circumfcrentially, by the action of the eccentrio 18 on the plate 10, the lever 27 may be swung in a direction opposite to that indicatccLby the arrow A in Fig. l, andthen the beveled portion 29 of the lever willbe retracted from the spring 22, whereupon the projection 23 will enter one oi the openings 21 and hold the eccentric 18 against rotation. Since the eccentric 18 thus is held against rotation, a longitudinal movement of the plate 10 is prevented, and the time cannot move circumferentially of the telly band 2 and effect a disengagement of the wedges 3 and 80. I i 'Having thus is claimed is 1- 1. In a device of the class described a wheel body; a rim circumscribin the body; the rim and the body'having circumferentially inclined parts which coact when the described the invention, what rim is moved circumferentially of the body;

a plate pivoted to the body for movement circumferentially of the body and radially latch with respect to the eccentric.

Edd of the body in amrcclion parallel to the median plane of the body, the plate and [he run having intere gin elements; and an eccentric jonrualer out ic body and journnlcd in the plate, the e centric cm sliluting means for moving the plate l'l\(lli\ll of the body to bring said elements into engagement? for moving the rin and constituting means circumferentiallyof the body.

2. In a device of the class dcscribcd, :1. wheel body; a rim'circudfitribing the body, the'rim and the ,body having circumfercw tially fiicl-preti"parts which coact when the rim is i'hdy ed cilciim'lercntially of the body a plate 'plvoted to the body for movcmcnt circumferentially of the body and for moroment radially oi the body in a direction parallel to the median plane of the body, the plate and the rim having intcrcngaging clc ments; an eccentric journaled on the body and j'ournalcd in the plate, the eccentric constituting means for moving the plate rudially of lhe body to bring said elements into engagement, and constituting means for ,moving the plate and the rim circtnnferentiii ly of the body; and means' re engaging the eccentric to prevent a rotation of the eccentric' 3. In a device of the class described, :1 wheel body; a rim circumscribing the body, the rim and the body having circumterentially inclined parts which coact when the rim is moved circumferentially of the body; a plate pivoted to the body for movement circumfcrentially of the body and radially of the body in a direction parallel to the median plane of the body, theplatc and the rim having interengaging elements; an eccentric journaled on the body and in the plate, the eccentric constituting means for bringing saidelements into engagement, and for moving the plate and the rim circumferentially of the body; a latch carried by the contro of an operator, for manipulating the In testimony that I 'claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses,

CLARENCE S. JGHNSTON.

Witnesses:

F. H. RAVAT, r I P. L. Hanan.

ion, 

